Need questions 1-6 done pls

The ratio of blue cards to green cards is 2 to 5. there are 8 blue cards. complete the diagram and explain how you can find the number of green cards.

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?